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Kaluza-Klein spectrometry for ${\rm AdS_{3}}$ vacua
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abstract
We use exceptional field theory to compute Kaluza-Klein mass spectra around ${\rm AdS_{3}}$ vacua that sit in half-maximal gauged supergravity in three dimensions. The formalism applies to any vacuum that arises from a consistent truncation of higher-dimensional supergravity, no matter what symmetries are preserved. We illustrate its efficiency by computing the spectra of ${\cal N}=(2,0)$ and ${\cal N}=(1,1)$ six-dimensional supergravities on ${\rm AdS_{3}}\times S^{3}$ and of type II supergravity on ${\rm AdS_{3}}\times S^{3}\times S^{3}\times S^{1}$.
Forward citations
Cited by 3 Pith papers
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Scale separation on AdS$_3\times S^3$ with and without supersymmetry
The complete Kaluza-Klein spectrum of six-dimensional Salam-Sezgin supergravity on AdS3 times a squashed three-sphere is computed; in the large-squashing limit, all but a small set of low-energy fields acquire infinite mass.
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Kaluza-Klein Perturbation Theory from Exceptional Field Theory
E6(6) ExFT yields gauge-invariant first-order KK fluctuation equations and a homotopy-transfer Higgs mechanism, applied partly to Kerr-Newman AdS5 near-horizon stability.
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Open strings in type IIB AdS$_3$ flux vacua
Dynamical open-string moduli do not destabilize previously found non-supersymmetric type IIB AdS3 flux vacua, and they generate new families of perturbatively stable AdS3 vacua.
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